沈阳农用土地重金属污染评价与来源分析

Evaluation of heavy metal pollution in soils of agricultural lands in Shenyang and source analysis

以沈阳市典型农用土地为研究区域,进行土壤重金属(As、Pb、Cu、Cr、Zn、Hg、Ni、Cd)的污染情况评价及来源分析。结果表明,农用土地土壤受到不同程度的重金属污染,其污染程度依次为Pb>Hg>Zn>Ni=Cu>As>Cd>Cr,潜在危害问题最为突出的重金属为Hg与Cd。污染的来源与工业生产和人类活动有关,其中最主要的影响因素为交通运输。

Heavy metal contamination has become an important environmental hazard in recent years.Pollution assessment and source analysis of 8 heavy metals in four typical agricultural lands of Shenyang（northwest of China） was carried out in this study.The result indicated： agricultural lands soil subjected to different levels of heavy metal pollution,the pollution extent is PbHgZnNi=Cu AsCdCr.The potential risk of heavy metals is a prominent problem for Hg and Cd.Pollution sources related to industrial production and human activities,with a main influence factor transportation.